The CF-04280444 from Filtronetics is a Band Pass Filter with Frequency 406 to 450 MHz, Bandwidth 44 MHz, Center Frequency 428 MHz, Insertion Loss 1.5 to 2.5 dB, Rejection 10 to 50 dB. Tags: Surface Mount, Ceramic Filter, Dielectric Filter. More details for CF-04280444 can be seen below.